in which I learn tags, maybe

OK, here's my attempt at reorganizing this into a tag-based system.  The idea here is that people who push the "zip" button should get the files they need, and not outdated versions, thus making it easier for people to follow the instructions on librarybox.us (which would need a slight modification in the download-the-zip-file portion, but not as much as "oh and learn git first").

A couple things you should check:
1) Do https://github.com/thatandromeda/LibraryBox/tree/v1.0 and https://github.com/thatandromeda/LibraryBox/tree/v1.5 contain the files you would actually hope for those versions to have?  (I think they contain more than is strictly needed for the librarybox install, because they contain all the files needed for development; I don't think that is a problem for the install.)

2) If you merge this pull request, do the tags merge over, too? (if not I can walk you through that)